ABSTRACT
This chapter describes the new systems and some of the older systems still in widespread use. The government has established an energy efficiency office which publishes a wide range of information on efficient use of energy in buildings. In Britain an increasing number of buildings, particularly those with high levels of artificial lighting or high buildings with large proportions of glazing, must be provided with facilities for cooling. The main criteria involved in this decision are amenity and economy, although in most cases there will be constraints limiting the range of decision. Daylighting and electric lighting were separate functions each having to achieve its own standards without any mutual compensation. Work under the auspices of the Electricity Council demonstrated that the building envelope could be designed to modify the thermal effects of the outside climate and that thermal installation could redistribute and even store excess heat. This approach was given the name integrated environmental design (IED).
